CN103329498A

CN103329498A - Apparatus and method for transceiving data streams in a wireless system

Info

Publication number: CN103329498A
Application number: CN2012800056928A
Authority: CN
Inventors: A.莫拉德; I.古铁雷斯
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2011-01-19
Filing date: 2012-01-18
Publication date: 2013-09-25
Anticipated expiration: 2032-01-18
Also published as: US20140079004A1; RU2581623C2; US20120188954A1; JP2014509112A; CN103329498B; GB201100901D0; GB201118537D0; WO2012099401A2; RU2013138430A; JP5940094B2; EP2667562A4; WO2012099401A3; US8711795B2; GB2487450B; GB2489196A; GB2487450A; EP2667562A2; AU2012207774A1; KR20120084677A; KR101759356B1

Abstract

The present invention relates to a method for transmitting data including a plurality of data streams in a wireless system, wherein the method comprises the following steps: receiving one or more data streams; mapping the received data streams to additional physical slots; constructing one or more frames including said additional physical slots; and transmitting said one or more frames via one or more radio frequencies.

Description

Be used for the apparatus and method at the wireless system transmitting-receiving data flow

Technical field

The present invention relates in general to a kind of wireless system, and more specifically, but is not ad hoc, relates to a kind of method and apparatus of the sending and receiving about the data flow in digital video broadcast system.

Background technology

Can send data with the form of the frame sequence in frame structure, arranged such as the wireless system of digital video broadcast system.Digital video broadcast system is abideed by digital video-frequency broadcast standard usually, and standards for digital broadcasting for example can comprise digital video broadcasting (DVB), Advanced Television Systems Committee (ATSC), integrated service digital broadcasting (ISDB) or DMB (DMB).Each frame generally includes preamble segments and data segment, and preamble segments and data segment are time-multiplexed.Data segment can comprise the data with the arranged in form of a plurality of data flow that are known as physical layer pipe (PLP).For example, the service such as the video channel that provides to the user can be provided physical layer pipe.Can receive data or data flow from frame with signaling information.This signaling can be called as physical layer signaling, or layer 1(L1) signaling.This signaling can be indicated modulation or the encoding scheme that will be used for receive data, and it can indicate and want decoded data field part, perhaps indicates the data receiver information needed such as the position of the data flow within the data segment.

Reference number video broadcasting (DVB) standard, digital video-frequency broadcast standard frame structure can provide the physical slot by time within the DVB physical frame structure to give in the future and use.For example, digital video broadcasting land 2nd generation (DVB-T2), the terrestrial broadcast standard has the superframe structure that comprises multiframe, and comprises the time slot that does not transport the DVB-T2 signal in superframe or each frame.It is known as following expansion frame (FEF) time slot.In other words, can except the part that be used for to send the frame structure that is intended to the signal that receives by traditional stationary digital video broadcasting receiver, provide the FEF time slot.

With reference to the digital video broadcasting hand-held (DVB-NGH) of future generation of current that setting up, the reception that is used for mobile broadcast, digital video broadcast system can provide the transmission that specifically is intended to the signal that receives by mobile broadcast receiver and handheld device.For example, such signal can be low bandwidth more, and has more healthy and stronger modulation and coding than the signal that is intended to by fixing receiver receives.

Exist and propose, the extra physical slot by time of use such as FEF time slot is for the transmission of the signal that is intended to receive by hand held receiver.Usually, extra physical slot by time comprises the signaling information for the reception of the data that send at physical slot by time or frame.

Yet, because shorter physical slot by time duration and high signaling consumption arranges in each physical slot by time that wherein this scheme of signaling information may be limited by limited capacity.In addition, because the finite capacity that can realize, with regard to attainable statistical multiplexing gain, this scheme may be limited.

Summary of the invention

An aspect of of the present present invention provides a kind of apparatus and method for the stream that transmits and receive data at wireless system, to alleviate the problem in the prior art systems.

Another aspect of the present invention provides a kind of apparatus and method for the stream that transmits and receive data at wireless system, be used for solving following problem, because shorter physical slot by time duration and high signaling consumption, traditional scheme may be subject to the impact of limited capacity, and because limited capacity, may be possible limited aspect spatial multiplexing gain.

According to an aspect of the present invention, provide a kind of method that in wireless system, sends the data that comprise a plurality of data flow.The method comprises: receive one or more data flow; The data flow that receives is mapped to extra physical slot by time; Configuration comprises one or more frames of described extra physical slot by time; And at the described one or more frames of one or more radio frequencies transmissions.

According to a further aspect in the invention, provide a kind of device that in wireless system, sends the data that comprise a plurality of data flow.This device comprises: the first gateway is used for data flow is mapped to the one or more logic channels that comprise one or more logical frame; One or more the first modulators are used for the data that generation will be included in each physical slot by time of logic-based channel; The physical slot by time agency is used for distributing the data that will be included in each physical slot by time to one or more the second modulators; And described one or more the second modulator, be used for modulation and send the frame that comprises the physical slot by time data of distributing.

In accordance with a further aspect of the present invention, provide a kind of method for receive the data that comprise a plurality of data flow at wireless system.The method is included in and receives one or more frames on one or more radio frequencies; Obtain the position of the extra physical slot by time of each frame; And receive the data flow be assigned to described extra physical slot by time.

According to still one side of the present invention, provide a kind of device for receive broadcast frame at wireless system.This device comprises for the logic channel selector that extracts about the signaling information of logic channel; Reach one or more RF selectors of the physical slot by time that is used for received RF (RF) signal and selects to select by described logic channel selector.

Description of drawings

From the description below in conjunction with accompanying drawing, above and other aspect, the feature and advantage of particular exemplary embodiment of the present invention will be clearer, wherein:

Fig. 1 illustrates the according to an embodiment of the invention schematic diagram of physical slot by time;

Fig. 2 illustrates in an embodiment of the present invention logical frame to the schematic diagram of the mapping of physical slot by time;

Fig. 3 illustrates the according to an embodiment of the invention schematic diagram of logic channel;

Fig. 4 illustrates according to an embodiment of the invention signaling information to the schematic diagram of the mapping of logic channel;

Fig. 5 is that the main channel and the less important logic channel that illustrate in an embodiment of the present invention arrive the schematic diagram of the mapping of physical slot by time;

Fig. 6 is the schematic diagram that the FEF time slot on three RF channels in an embodiment of the present invention is shown;

Fig. 7 illustrates the according to an embodiment of the invention schematic diagram of the layout of three logic channels;

Fig. 8 illustrates the according to an embodiment of the invention schematic diagram of the movement of physical slot by time;

Fig. 9 illustrates the according to an embodiment of the invention schematic diagram of the layout of two logic channels;

Figure 10 is the schematic diagram that NGH frame in an embodiment of the present invention is shown;

Figure 11 be illustrate in an embodiment of the present invention NGH superframe configuration and the schematic diagram of the alignment that configures of T2 superframe;

Figure 12 is the table that L1-Pre signaling field in an embodiment of the present invention is shown;

Figure 13 is the table that L1-config signaling field in an embodiment of the present invention is shown;

Figure 14 be illustrate in an embodiment of the present invention L1-dynamic and the table of in-band signalling field;

Figure 15 is the flow chart that receiver in an embodiment of the present invention is shown;

Figure 16 be illustrate in an embodiment of the present invention network and the schematic diagram of transmitter architecture;

Figure 17 is the schematic diagram that repeater in an embodiment of the present invention is shown; And

Figure 18 is the schematic diagram that repeater in an embodiment of the present invention is shown.

Embodiment

As an example, will for digital video broadcasting land 2nd generation (DVB-T2) system or now hand-held (DVB-NGH) system of future generation of the digital video broadcasting in foundation embodiments of the invention are described.But, should be appreciated that, this only is as an example, other embodiment can relate to other wireless broadcast systems or clean culture/multicast system; Embodiments of the invention are not limited to the transmission for digital video signal.

As shown in fig. 1, existing digital video broadcasting frame structure (for example DVB-T system) can provide

FEF time slot

2a, 2b, 2c within the transfer sequence 1 of rf channel.The FEF time slot also can be called FEF part or FEF section.The FEF time slot is physical slot by time, and it is not used in the transmission of DVB-T2 signal, and can keep in order to using in the future.In Fig. 1, in T2 frame 8, send the DVB-T2 data, and be intended to except being used for transmission can provide the FEF time slot the part of frame structure of the signal that receives by traditional DVB-T2 receiver.

Exist and propose, use can not send the FEF time slot of existing DVB-T2 data therein, is intended to the signal that receives by hand held receiver (for example DVB-NGH receiver) for transmission.In this case, all or some FEF time slots are used for transmission NGH signal, and these are called as NGH time slot 4.The NGH time slot also can be called NGH part and NGH section.Although carry out following description in connection with the FEF time slot, in fact will in as the NGH time slot of all or some FEF time slot, send the NGH signal.In Fig. 1, the simple case of such scheme is shown as " option one " 3.Can find out, the NGH signal is divided and is transmitted as the series of the logic NGH frame on logic NGH channel 3 (6a to 6e), each

logical frame

6a, 6b of transmission, 6c within independent

FEF time slot

2a, 2b, 2c.In other words, give a logic NGH of each FEF time slot allocation frame.The NGH frame that comprises the NGH data is called logic NGH frame (LNF), and this is because it is at the FEF time slot or be not more than in the NGH time slot of FEF time slot and physically transmitted.Logic NGH frame, NGH frame and LNF will be used with synonymous.In addition, the channel that transmits continuously the NGH frame thereon is called logic NGH channel (LNC).Logic NGH channel, NGH channel and LNC will be used with synonymous.Physically, can arrange and transmission logic NGH channel in a plurality of frequencies with in the time, and describe in detail in connection with embodiments of the invention.As shown in fig. 1, but logic NGH frame 6a can occupy can the less FEF of being not more than time slot 2a NGH time slot 4.The related signaling information of each logic NGH frame tool; This will transmit as preamble 7a, 7b, the 7c in each FEF time slot usually.Yet because high signaling consumption, this scheme (scheme of namely transmitting each logic NGH frame and arrange signaling information in each logic NGH frame in each FEF time slot) may be limited by limited capacity.

In the first embodiment of the present invention, such as " option 2 " 5 by Fig. 1 with by shown in Figure 2, configuration logic NGH frame 27 in two or more

FEF time slot

2a, 2b and 2c is so that the length of logic NGH frame 27 can be greater than the length of FEF time slot 2a, 2b.In other words, can configure a logic NGH frame by being incorporated in the data of transmitting in two or more FEF time slots, and this can be represented as FEF boundling (bundling).In this case, be limited to the situation of the length of FEF time slot compared with the length of the logic NGH frame that looks like " option one " 3, can reduce for the signaling information of signaling consumption and the ratio of data capacity.In the situation that by a plurality of radio frequencies (RF) channel transmission they, two or more FEF time slots can be within the transfer sequence for different rf channels, even and the length of FEF time slot can change between rf channel, logical frame also can be arranged to has regular length.Length that can logic NGH frame is set to optimum value, and wherein, this optimum value is for the balance of data acquisition between the time of the receiver of signaling consumption and request access excessive data.

Be intended to generally include some data flow by the signal that the NGH receiver receives, this data flow can be physical layer pipe (PLP), and first group of these data flow generally can be mapped on a series of logic NGH frames.As shown in fig. 1, in an embodiment of the present invention, given logic NGH frame 27 can transmit at least part of (also being known as the FEF part) of two or more FEF time slots.In the situation of the logic NGH of Fig. 1 frame j, can find out that this logic NGH frame j transmits in three FEF time slots (can be known as extra physical slot by

time

12a, 12b, 12c).Therefore the length of logic NGH frame can be independent of the length of FEF time slot, is subject to the low signaling information of the situation (option one) of length restriction of extra physical slot by time (FEF time slot) to data Capacity Ratio example so that logic NGH frame can be arranged to the length that has such as fruit logic NGH frame.As shown in Figure 2, given logic NGH frame 27 is in order to comprise signaling information and data, and signaling information generally comprises " P1 " 20a, 20b and " before the L1-pre() " 22a, 22b, " L1-config(configuration) " 24 and " L1-dynamic(is dynamic) " 25.Understand " P1 ", " L1-pre ", " L1-config " and " L1-dynamic " with reference to the details of " ETSI EN302755 " (DVB-T2 normative document) in this manual, unless otherwise indicated." L1-config " and " L1-dynamic " is referred to as " behind the L1-post() ".

Data segment

23,26 and 28 comprises physical layer pipe.For example, described physical layer pipe can be overlapping on time-domain, and can be re-used in frequency domain.

In the first embodiment of the present invention, can in each extra physical slot by

time

2a, 2b etc. (can be the FEF time slot), transmit P1 and L1-pre

signaling information

20a, 22a, 20b, 22b etc., and the beginning of signaling information indication time slot, and comprise the physical layer parameter that when the transmission in each extra physical slot by time of reception, will use.Can be not in each extra physical slot by time the L1-

post signaling information

24,25 etc. of transmission such as L1-dynamic and L1-config because it is based on the NGH frame and transmits basically.Can within each extra physical slot by time, transmit

data

18a, 18b, 18c, 18d, 18e and 18f such as payload data.

L1config is the section of transmitting therein the L1-config signaling information, and the L1-config signaling information typically comprises for each frame of the superframe that comprises multiframe all effectively and for each logic NGH frame of superframe identical information all.L1-dynamic information generally changes from logic NGH frame to logic NGH frame, and comprises the information for the physical layer pipe within the decode logic NGH frame.Typically, for example L1-dynamic information can comprise the initial address of physical layer pipe (pipe).

Consider compatibility and the signaling consumption of existing system, and the content of signaling information is arranged signaling information.For example, with reference to Fig. 2, in each NGH time slot, transmit P1 information and L1-pre information.This is the compatibility of having considered existing DVB-T2 system.On the other hand, consider beginning or the end of logic NGH frame, arrange L1-config information and L1-dynamic information in the position of the relevant code element in the NGH time slot.Although not shown, if the signaling information of L1-config information is less on amount, then can in each NGH time slot, transmit L1-config information with P1 information and L1-pre information.Even if in each NGH time slot, do not arrange L1-pre information, the receiver of existing system (T2) and NGH receiver are also no problem in receiving existing signal (T2 signal) and NGH signal respectively, then can be with the beginning of logic NGH frame or finish layout L1-pre information in the corresponding position.The content that depends on its signaling information can be deleted each of L1-config information and L1-dynamic information.

In an embodiment of the present invention, as mentioned above with the NGH time slot boundling (bundle) within extra physical slot by time (FEF time slot) sequence to be formed for transmitting the logic NGH channel of a group data stream, and a series of logic NGH logical frame within the logic channel are mapped to the sequence of extra physical slot by time (for example, FEF time slot).Can come transmission logic NGH frame sequence by one or more RF channels.If transmit this sequence by single RF channel, tuner need to not resetted between extra physical slot by time so that receive logic NGH frame sequence so.Yet, if the sequence 30a...30h of logic NGH channel or a series of logic NGH frame are transmitted by a plurality of radio frequencies 1, RF2, RF3 and RF4, namely be selected as dropping on some rf channels, among the second embodiment as shown in Figure 3, can form so and have more jumbo logic channel, and logic channel can also have benefited from frequency diversity.Single channel can be formed the large data capacity that has by the data capacity generation of extra physical slot by time sequence, rather than a plurality of channels (each all has more small data capacity), can be multiplexed on the individual channel so that serve, thereby the result who has with regard to statistic multiplexing gains.

As shown in Figure 3; provide the protection interval between the extra physical slot by time the preceding in each extra physical slot by time of sequence 30a...30h and each; to allow tuner between the reception of each extra physical slot by time, to reset, so that can come receiving sequence with single tuner.For example, after the 30a on using single tuner reception RF1, can before receiving 30b, be tuned to RF2.

Equally as shown in Figure 3, can be by forming the second logic NGH channel to second sequence (for example FEF time slot 32a...32h) of extra physical frame on the second series that the second group data stream is mapped to logic NGH frame and with the second sequence mapping of logic NGH frame.As shown in Figure 3, the second sequence 32a...32h of extra physical slot by time can not comprise any one of First ray 30a...30h of described extra physical slot by time, so that the second logic channel can utilize other extra physical slot by time of using outside those that single tuner can receive.Other sequence by extra physical slot by time can provide other logic channel.

In the situation that provide more than a logic channel, article one, logic channel can be designated as main logic channel, it can be known as main NGH channel (PNC), and other are designated as less important logic channel, and it can be known as less important NGH channel (SNC).Can be from for forming main logic channel the physical slot by time that interval and/or lower expense are selected between larger robustness, larger capacity, shorter physical slot by time, and main logic channel can be used for receiver and obtain for the first time signal or be used for fast channel and switch (zapping).Main logic channel can transmit L1-config information, enables to obtain the service that provides by less important logic channel.In other words, main logic channel is provided by the entrance of the service that is provided by less important logic channel.Thereby the receiver that needs to access the service of transporting at less important logic channel can at first receive main logic channel, and main logic channel will provide L1-config information to enable to obtain the service that is provided by less important logic channel or other logic channel.As a result, only need to be in every frame of main logic channel and not be used in and transmit L1-config information in every frame of less important logic channel, reduced signaling consumption and increased less important and data capacities other channels.

L1-config information can be indicated the configuration of one or more described a plurality of data flow, and can transport by each logical frame that is mapped to main logic channel, to reduce the delay in visit data stream.Also can transport L1-config information by the first logical frame in the superframe of less important logic channel, can be take as the superframe of the set of a plurality of frames system parameters as unit variation because may exist.Even in this case, also need to do not transported by other logical frame in the less important logic channel except main logic channel, to reduce signaling consumption.

In an embodiment of the present invention, L1-config information can comprise the information about the sequence of the extra physical slot by time that forms main and less important logic channel.

On the contrary, L1-dynamic information can be contained in each logical frame of main and less important logic channel, but L1-dynamic information may only carry the information about separately logic channel, and this has reduced signaling consumption.

Be illustrated in mainly and the configuration information (for example L1-config) within the secondary channel and the layout of dynamic signaling information (for example L1-dynamic) by Fig. 4.Can find out that the L1-dynamic signaling transported by each of all logic channels that comprise PNC and SNC, and the L1-config signaling is mainly transported by the PNC logic channel, and dotted line indication L1-config signaling is only transported by the frame subset (for example, the first frame of the superframe of SNC) of SNC logic channel.Fig. 4 also illustrates PNC and SNC logic channel, and each is included in FEF time slot on a plurality of RF channels.

The 3rd embodiment is corresponding to a kind of method that generates a plurality of logic channels, and is different from the second embodiment that generates a logic channel.The sequence of data frames 52 that forms main logic channel is shown Fig. 5 and how the sequence of data frames 54 that forms less important logic channel can be mapped within the FEF time slot on three RF channels 56,57,58.

In the situation of main logic channel 52, arrange L1-config information and L1-dynamic information in the element position in the NGH time slot relevant with the position of the beginning of each logic NGH frame or end.On the other hand, in the situation of less important logic channel 54, only arrange L1-dynamic information in the element position in the NGH time slot relevant with the position of the beginning of each logic NGH frame or end.In the example of Fig. 5, respectively at first, second, and third NGH time slot of the main logic channel 52 of RF1 56, RF2 57 and RF3 58 transmission, and first, second, and third NGH time slot comprises the part of whole and (i+1) logical frame of part, the i logical frame of (i-1) logical frame.Can be from the central border of location positioning (i-1), i and (i+1) logical frame of L1-config information and L1-dynamic information.In addition, respectively at first, second, and third NGH time slot of the less important logic channel 54 of RF3 58, RF1 56 and RF2 57 transmission, and first, second, and third NGH time slot comprise less important logic channel (i-1) logical frame part with and the part of i logical frame.Can be from the location positioning (i-1) of L1-dynamic information and the border between the i logical frame.

Typically, the OFDM code element that has similar number for each logical frame of given superframe.

Digital video broadcast system can comprise that repeater (repeater) or auxiliary transmitter (gap filler) are with the covering in the weak zone of the propagation that is provided at autonomous reflector.In an embodiment of the present invention, have precedence over other receive datas such as the digital video broadcast signal that is intended to receive by the fixed reception device, select to form the physical slot by time of at least one logic channel for the repeating transmission at repeater or auxiliary transmitter place.This can improve the efficient of repeater, and is retransmitted because the data that only receive within extra physical slot by time just may need, because extra data may be intended to receive by handheld device.Handheld device may need than the needed stronger signal of reception that is intended to by the fixed reception device that may have roof antenna the first data that receive, that send within the physical frame structure.In addition, may only need single tuner for each logic channel at the repeater place.

The number of the logic channel that sends can depend on the maximum number of the extra physical slot by time (for example FEF time slot) that sends simultaneously.This illustrates by Fig. 6 and Fig. 7.In Fig. 6, can find out on three

RF channels

60,62,64 to send the FEF sequence of time slots, and from minimum timeline 66 can find out can exist 0 and maximum " 3 " individual between the time FEF time slot that sends.In other words, although the structure of the superframe that uses at each RF in the embodiment that has described so far is identical, each RF has different superframe structures in the embodiment of Fig. 6.Under this structure, each RF can be different on the number of the FEF time slot of its distribution, length and location, and each RF even in the data that send at whole RF (for example, DVB-T2 data and DVB-NGH data) to the ratio of the data (for example, DVB-NGH data) that in the FEF time slot, send or DVB-T2 data to can be different on the ratio of DVB-NGH data.In Fig. 7, can find out the frequency-hopping mode shown in using, can form three

logic channels

70,72,74 from these FEF time slots.As can finding out in Fig. 7, the maximum number of logic channel is relevant with the number of overlapping FEF time slot.As previously mentioned, each logic channel can form PNC and SNC.

Shown in Figure 8 as passing through, the timing slip that can be arranged in the FEF time slot on one group of

RF channel

80,82,84,86 is to reduce overlapping between the FEF time slot, so that the FEF time slot distributes more even in time domain, so that can increase the capacity of each logic channel, utilize the needed logic channel number of available extra slots and can reduce.As shown in Figure 8, by shown in four RF channels between suitable timing slip, the maximum number of the FEF time slot that sends simultaneously can be reduced to two, so that can form as shown in Figure 9 two

logic channels

90,92, as main 94 and less important 96 logic channels.

Now with embodiment of the present invention will be described in more detail.

In prior art systems, since comprise high definition (HD) and three-dimensional (3D) service, mainly be intended to the high power capacity requirement of traditional DVB-T2 service of receiving by the fixed reception device, for general very low (FEF_length(FEF length in most of situation)＜20% of the amount of bandwidth of each RF channel of NGH).In other words, owing to the mass data that is used among traditional DVB-T2, so the T2 frame that will send is more, the FEF that can be used for the DVB-NGH transfer of data is fewer.As a result, the NGH of each T2RF channel service number may be very low (3-5 TV and broadcast program), limited and passed through the attainable gain of statistic multiplexing.In addition, frame is shorter, and the filling expense of introducing at every End of Frame place may become larger.Time of switching channels (receiving the time of new service) in order not affect the T2 service can use short FEF(FEF_INTERVAL(FEF interval)≤2).In this case, NGH L1 signaling consumption may become quite large.When increasing the number of PLP, L1-Post signaling information (L1-config and L1-dynamic) may cause main expense.

Embodiments of the invention by the data boundling that will in the FEF time slot, transmit to provide one or more logic NGH channels to solve these problems.The first embodiment of the present invention has been introduced a kind of new frame format, shown in " option 2 " 5 among Fig. 1.The beginning of P1 code element indication NGH time slot.Otherwise traditional T2 receiver may not receive the T2 signal.

" option one " 3 expressions situation of the prior art among Fig. 1, wherein transmission NGH frame within the FEF time slot.In this case, the DVB-T2 frame is encapsulated within the FEF.

In an embodiment of the present invention, the NGH frame is not equal to FEF and is not equal to the DVB-T2 frame.In this arranged, the NGH frame did not align with FEF part (being also referred to as the FEF time slot), and the NGH signal needn't use whole FEF; The part of transmission NGH signal is called as the NGH time slot in Fig. 1 in the FEF part.Then with the data set string (time domain boundling) in the FEF part to form the NGH frame, as shown in fig. 1.Typically, all NGH frames can have the OFDM code element of similar number, and all frames can have same capability.Typically, after the P1 code element, transmit immediately L1-Pre.Can use P2 code element (can have special pilot pattern) to transport L1-Pre information.To this, generally only a P2 code element may be just enough.As in DVB-T2, L1-Pre information can carry the minimal information about frame format, causes the minimizing of the signaling consumption of L1-Pre information.Use L1-Pre information, the NGH receiver is known the beginning of NGH physical slot by time/end, and when dispatches next NGH frame and its duration.This can simplify the detection (L1-Pre comprises the pointer to next L1-config and L1-dynamic) of L1-config and L1-dynamic.Generally, L1-config and L1-dynamic can begin at any OFDM code element place of FEF part or NGH time slot to send, but cannot be present in FEF part or the NGH time slot.

As shown in Figure 3, can with the data boundling (frequency domain boundling) in the FEF part that is included on the different T2RF channels, increase the capacity of logic NGH channel.Yet, in the situation that overlapping FEF namely, if appear on a plurality of RF at a certain special time FEF, when single tuner is used for receiving, only can recover to be included in the signal in the central FEF part of FEF on a plurality of RF.Provide each data, services by single logic NGH channel, so that only need a tuner to recover this service.Next, will the concept of a plurality of logic NGH channels be described.If there are a plurality of logic NGH channels, then replacement may cause frequency slicing service time (TFS) of too much expense to come to transmit with signal the service of all propositions, can select a logic NGH channel as main NGH channel (PNC), and all the other are as less important NGH channel (SNC).In an embodiment of the present invention, L1-Pre comprises about carried the information of main NGH channel in which RF.L1-config is mapped to the place that begins of each superframe in main channel and each secondary channel.L1-dynamic can be mapped to all logic channels, but only can comprise the signaling for the service of being transported by this logic NGH channel.The channel that so main NGH channel can be responsible for providing the fastest switches and obtains, and can be considered to the entrance of any service of transmitting in any less important NGH channel.If only need a tuner at receiver-side, the bandwidth of then distributing to a logic NGH channel generally is not higher than the bandwidth of T2 RF channel.

In an embodiment of the present invention, can be with the FEF boundling, and this can carry out the signal transmission in following various situations.

(1) first, single T2 RF channel can be used, and any T2 superframe structure (Fig. 2) can be used.Replacedly, can use a plurality of T2 RF channels.In the case, may there be following some options.(2) all RF channels of a plurality of T2 RF channels can have identical T2 superframe structure, and single logic NGH channel (Fig. 3) can be provided.(3) all RF channels of a plurality of T2 RF channels can have identical T2 superframe structure, and a plurality of logic NGH channels (Fig. 4) can be provided.In each of above situation, T2 frame length and FEF interval can be flexibly, and can be suitable for providing the allocation optimum of NGH channel.

As further replacement, (4) can provide different T2 superframe structures (Fig. 6 to 9) in the middle of a plurality of T2 RF channels and a plurality of logic NGH channels.In this case, move the degree of freedom that (time shift) can obtain logic channel by the time in the T2 superframe.If only transmission does not rely on the NGH signal of T2 transmission, then can freely select the NGH time slot, also within the NGH signal, introduce the FEF part.

Fig. 2 illustrates the situation of single T2 RF channel.In this case, the FEF boundling only operates in time domain.In this case, on existing T2 signal, may not need restraint.

In the situation such as a plurality of T2 RF channels among Fig. 3, wherein have identical T2 superframe structure and single logic NGH channel among all T2 RF, this situation can represent for the simplest situation of considering the FEF boundling of frequency domain on a plurality of T2 RF channels.For all T2 RF channels of boundling in single logic NGH channel, should satisfy the condition of following formula (1):

N _RF(T _SLOT+T _SW)≤(T _FEF+FEF_INTERVAL×T _F)......(1)

T wherein _SWBe receiver be tuned to time of needing of new frequency.N _RFThe RF number, and T _SLOTAnd T _FEFRespectively the SLOT(time slot) length (time) and the length (time) of FEF.FEF_INTERVAL is the number of T2 frame between two FEF, and TF is the length (time) of T2 frame.When the both sides of expression formula equate, can realize largest logical NGH channel capacity (bit rate).

At a plurality of T2 RF channels, have in the situation of identical T2 superframe structure and a plurality of logic NGH channels among all T2 RF, when not satisfying the condition of front, can infer in some interims two NGH time slots are distributed to T2 RF channel simultaneously, perhaps not have time enough to can be used between frequency, switch.In order only to need a tuner at the receiver place, embodiments of the invention can adopt a plurality of logic NGH channels.In the situation that a plurality of logic channels can be updated to the condition of front following formula (2):

N _RF(T _FEF+T _SW)≤N _LNC(T _FEF+FEF_INTERVAL×T _F)......(2)

N wherein _LNCThe number (1≤N of logic NGH channel _LNC≤ N _RF).

Fig. 5 illustrates a plurality of T2 RF channels, has the situation of identical T2 superframe structure and a plurality of logic NGH channels in all T2 RF.

Fig. 6 illustrates a plurality of T2 RF channels, has the situation of different T2 superframe structure and a plurality of logic NGH channels in the middle of the T2 RF.

In this more common situation, NGH fixed percentage bandwidth (BW%) may be different in T2 RF channel, have different superframe structure (being T2 frame length, FEF interval and FEF length) and asynchronous T2 RF.In this case, as shown in Figure 6, can be with the number N of a plurality of logic NGH channels _LNCBe calculated as the maximum number of overlapping FEF, for example N in Fig. 6 _LNC=3.

Fig. 7 illustrates a plurality of T2 RF channels, has the situation of different T2 superframe structure and a plurality of logic NGH channels in the middle of the T2 RF channel, as in Fig. 6.The first logic NGH channel that typically, be assigned with is PNC 72.The major function of PNC can be to enable rapidly channel switching, and therefore, PNC can be the logic channel with heap(ed) capacity.This can also help to compensate the overhead of PNC.In the example of Fig. 7, according to the mode of maximization frequency diversity gain FEF is distributed to PNC(PNC and can use all RF frequencies).In other embodiments, in order to distribute FEF, can use other standards.For example, the robustness of the increase of PNC (for example distributing lower frequency to PNC) can be other standards, and PNC can be assigned to single RF to avoid the switching between the channel.Continuously lower frequency difference, expense etc. can be other standards between the FEF.In an embodiment of the present invention, distribute after the PNC, all the other FEF are distributed to SNC.As long as guaranteed the minimum switching time between the RF carrier wave, multiple combination can have been arranged.In the example of Fig. 7, have benefited from the frequency diversity of frequency hopping and connect FEF for the bit rate of average logic NGH interchannel also has to increase, but can introduce other standards with being directed to the similar fashion that PNC distributes.

In example before, it (is N that the FEF major part on the different RF channel occurs simultaneously _LNC→ N _RF).In an embodiment of the present invention, can mobile T2 superframe to reduce the number of logic NGH channel, increase the capacity of each logic NGH channel.The capacity that increases each NGH carrier wave can increase the potential gain of statistic multiplexing.Because the superframe format from each RF is known, can calculate the time period of a plurality of logic NGH channel group.This time period T _bOf great use, because optimization algorithm may be used that scope work.

Fig. 8 illustrates as algorithm embodiments of the invention, boundling FEF.In this case, have a plurality of T2 RF channels and a plurality of logic NGH channel, and a plurality of TF RF channel has different T2 superframe structures.Can adopt following algorithm to obtain to be applied to the movement of each RF.

(1) before each FEF, inserts guard time.Consider that tuning period determines guard time, wherein tuning period is that tuner begins to decode after switching the RF frequency the needed time of data that RF channel in switching transmits.This guard time represents with the black surround among Fig. 8.

(2) can be according to the RF channel that sorts from maximum FEF to the FEF length of the shortest FEF.In the situation of the FEF length that equates, the RF that will have maximum FEF_INTERVAL places first.

(3) for given FEF(for example, the FEF in the superframe), can move each i RF, so that after the FEF of (i-1) RF, transmit given FEF.

(4) number N of acquisition FEF simultaneously _LNC(t).At the first point of algorithm, for N _LNC(t) peak, it is called as n _LNC, and obtain overlapping FEF N _OVFrom the longest FEF to the shortest FEF to N _OVIndividual overlapping FEF ordering.Then estimate the longest N in the middle of the FEF of ordering _OV-1 FEF is mobile to be used for.If the max (N after mobile _LNC(t)) be less than mobile max (N before _LNC(t)), then will carry out movement.If reduced n _LNC, then next step is described the first point that arrives in the algorithm.If no, can arrive so the ending of algorithm.In other words, repeat such process, comprise and calculate FEF number overlapping in time domain, mobile all the other FEF except the shortest FEF to be reducing the number of the overlapping FEF that calculates, and again mobile in the middle of mobile FEF all the other FEF except the shortest FEF.

As a result, FEF can be mapped to as shown in Figure 9 as a result logic NGH channel.Can find out, as discussed earlier, FEF is mapped to PNC and SNC.Because the movement that applies may be mapped to same PNC/SNC with some adjacent FEF.This may be useful with regard to power consumption, comes sending/receiving FEF because can be used as pulse for each PNC/SNC.In an embodiment of the present invention, FEF is distributed to logic NGH channel so that in the bit rate difference of the simultaneous minimization logic NGH interchannel of the RF frequency number (that is, higher frequency diversity) of maximization exploitation.Use signal indication among the L1-config that final FEF mapping can be transmitted in PNC.

How Figure 10 can define the NGH frame if illustrating.In this example, define the NGH frame according to the OFDM number of symbols in each NGH frame (it is constant for all the NGH frames in the NGH superframe).It is constant that NGH frame capacity can keep between the NGH frame, yet, because may there be variation in the bursty nature of transmission on instantaneous throughput.But different logic NGH channels may have different every frame OFDM number of symbols.In PNC, generally transmit L1-config and L1-dynamic at the place that begins of each NGH frame, and in SNC, generally a NGH frame of superframe begin the transmission L1-config of place and L1-dynamic, and only transmit L1-dynamic at the place that begins except all the other NGH frames of a NGH frame of superframe.

Figure 11 illustrates can how to align NGH superframe and T2 superframe.The variation of NUM_T2_FRAMES, NUM_DATA_SYMBOLS, FEF_LENGTH or FEF_INTERVAL has produced new superframe structure (hereinafter, this superframe structure can be abbreviated as superframe structure (SFS)).Because the FEF boundling operates based on the structure of existing a plurality of T2 RF channels, so any change of the structure of T2 RF channel causes the change of NGH configuration, so that be necessary to reconfigure the NGH configuration.Reconfiguring may need with signal indication and propagate into all receivers at every turn.In order to reconfigure fast a bit, L1-Pre can allow L1-config and the L1-dynamic in any logic NGH channel (PNC and SNC).Avoid possible little reduction (mirco-cuts) in case receiver must switch to SFC that then PNC get back to SNC reconfigure during, can use this option.Yet these variations can not occur continually, and usually are scheduled to be minimized in the impact at receiver place during the last time (late hours).Therefore, existing extra signaling may be negligible.Except this possible restriction, can freely define the NGH superframe.

In existing T2 signaling, determine that the signaling field of frame structure (with FEF length) is included in L1-Pre signaling and the L1-Post signaling, and L1-Post information comprises L1-config information and L1-dynamic information.Determine that the signaling field of the frame structure in the DVB-T2 transmission system is included in the T2 frame number of each superframe of NUM_T2_FRAMES(that transmits among the L1-Pre) and the OFDM number of symbols of each T2 frame of NUM_DATA_SYMBOLS(), and be included in the length of the FEF_LENGTH(FEF that transmits among the L1-Post) and two FEF of FEF_INTERVAL(between the T2 frame number).In the present invention, for transmission NGH data in FEF, should change, interpolation or deletion or all signaling fields.

Figure 12 illustrates the example of the signaling information among the L1-pre that comprises in an embodiment of the present invention.As shown in Figure 12 as the embodiments of the invention that are used for NGH, transmit under the frame structure that proposes of T2/NGH frame after therein the T2/NGH frame being multiplexed on the same frame structure, can be effectively (that is, use the signal indication frame structure in L1-Pre) at signal field.This can realize by the information of the OFDM number of symbols of transmission such as the interval between the interval between the FEF, the NGH time slot and each NGH frame in L1-Pre.For example, the interval between two the continuous NGH time slots of NGH_SLOT_INTERVAL indication that in L1-Pre, transmit.When FEF_INTERVAL=256, can obtain to grow most the interval, and use the longest frame length (250ms), in this case, can provide 64 seconds the longest NGH_SLOT_INTERVAL.Can be with the NGH_SLOT(NGH time slot) be restricted to 250ms.The OFDM number of symbols of each NGH frame also can be used signal indication, and can transmit in the NUM_SYMBOLS_NGH_FRAME of L1-Pre field about the information of number of symbols.L1-Pre can indicate the position (starting position of next NGH frame) of next L1-config and L1-dynamic.May be only preliminary sweep or channel between transfer period positional information be only necessary.L1-Pre can also be used to transmission about the information PNC_RF_FREQUENCY(PNC RF frequency of the RF of present immediate main logic NGH channel (PNC)).This can be to the position of preliminary sweep or the L1-config of channel between transfer period of receiver notice transmitter.Should notify the decoding of the position of L1-config for the service of the expectation that is mapped to PNC/SNC.

Figure 13 illustrates the example of the signaling among in an embodiment of the present invention the L1-config.In L1-config, the number of related RF channel and the number (NUM_LNC) of logic NGH channel have been indicated.In L1-config, be used for the T2_frame/NGH structure of time slot of each T2 RF with signal indication and transmission.In the NGH_SLOT_OFFSET(NGH slot offset that is present in for the circulation of each RF) can know the skew between the FEF of each T2 superframe in the field.This circulation provide can know the information of T2 superframe structure of related T2 RF channel.The second circulation shows how FEF is mapped to logic NGH channel (only with signal a circulation is shown, and the number of cycles of each superframe being integer) with signal.Then each PLP is distributed to a logic NGH channel.In this example, because the NGH frame does not align with FEF, FIRST_FRAME_IDX(the first frame index so) refer to a NGH frame, rather than a NGH time slot.In the situation that do not use the FEF boundling, L1-config keeps close to prior art (DVB-T2 etc.) signaling, so that may exist seldom or do not have an expense.

Figure 14 illustrates signaling and the in-band signalling (Inband Signaling) among the L1-dynamic in the embodiments of the invention.In L1-dynamic, no longer need the RF_IDX(RF index) field.This is because will reach physical layer pipe (PLP) distributes to a logic NGH channel, and transmits this information in L1-config information.Notice that the RF_IDX field is by SLOT_IDX(time slot index) substitute.SLOT_IDX can allow receiver to know the FEF_bundling(FEF boundling) sequence is in which position, and therefore at the time slot of knowing in the future that each logic NGH channel uses.Different piece at SNC is mapped in the situation of different PLP, whole group of PLP should be mapped to same logic NGH channel so that can only need a tuner.

Figure 15 is the flow chart that the operation of receiver in an embodiment of the present invention is shown, and is illustrated in the step of receiver place discovery logic NGH channel and structure thereof.Can between transfer period, perhaps during the change of superframe structure, carry out this process at the preliminary sweep when the structure of target logic NGH channel is unknown or channel.

With reference to Figure 15, receiver in step 1501 in the signal that receives search P1 code element and the P1 code element of decoding so that can determine whether NGH signal of this frame.For example, have particular value if comprise 3 S1 field of P1 code element, can determine then whether the current affiliated FEF of this P1 transmits the NGH signal.In P1, obtain time of receiver and Frequency Synchronization and for frame boundaries synchronously.If determine that P1 is not the NGH signal, then receiver returns step 1501.Yet if determine that P1 is the NGH signal, whether only receiver determines this NGH signal NGH channel in step 1505.If it is not transmit together T2 signal and NGH signal thereon but the only NGH channel that only transmits the NGH signal, then receiver finds logic NGH channel in step 1521.In the situation that NGH channel only, all its channels have the NGH data, because do not transmit together the T2 signal.So this channel is not represented as logic NGH channel, but the NGH channel can only be expressed as.Yet, if it is not NGH channel only, the receiver L1-Pre that in step 1507, decodes, and determine that in step 1509 having the RF position PNC_RF_FREQ of PNC is current frequency.In other words, receiver determines whether PNC is present in the current frequency.If PNC_RF_FREQ is not current frequency, then receiver is PNC_RF_FREQ with current set of frequency in step 1511, and returns step 1501.In other words, the RF signal that exists in order to receive PNC, receiver is PNC_RF_FREQ with current set of frequency, and receives the RF signal.

But if PNC_RF_FREQ is current frequency in step 1509, then receiver waits for that in step 1513 L1-config begins.If L1-config begins, in step 1515 and 1517, decode successively L1-config and L1-dynamic of receiver then, about the information of the configuration of logic NGH channel (for example in step 1519, obtain, NGH_SLOT_INTERVAL, NUM_SYM BOLS_SLOT, NGH_SLOT_OFFSET, LNC_SLOT_PERIOD, RF_IDX etc.), then in step 1521, find (logic) NGH channel that transmits the service of expectation thereon.

Figure 16 illustrates as the network of embodiments of the invention and transmitter architecture.Network in Figure 16 and transmitter architecture comprise T2 network 1610, FEF agency 1620 and NGH network 1630.In realization, FEF agency can be included in the independent processor or NGH network or T2 network on existing processor in.Physically, the NGH network can be configured to a physical entity by merging with existing T2 network.T2 network 1610 among Figure 16 is structurally too not different with existing T2 network and transmitter, and all will omit its description.

In this embodiment, at least two new elements have been introduced: FEF buncher 1622 and FEF distributor 1624.FEF buncher 1622 can be responsible for creating logic NGH channel, and FEF is assigned to logic NGH channel.FEF buncher 1622 can be distributed to logic channel with physical slot by time according to embodiments of the invention.The input of FEF buncher 1622 can be the superframe configuration that is used in the T2 RF channel of T2 network 1610.FEF buncher 1622 can be connected at least one NGH network 1630, but it can be connected to a plurality of NGH networks, does allocated bandwidth because can act on behalf of 1620 by FEF.In case defined logic channel, FEF buncher 1622 just can to NGH gateway 1632 notification logic channel numbers, each bit rate, in each frame duration, to each logical channel assignment which physical slot by time and the timing of each etc.In other words, the FEF buncher is responsible for collecting the information for creating logic NGH channel, and based on the information creating logic NGH channel of collecting.

As shown in Figure 16 in an embodiment of the present invention, the FEF distributor generally receives all NGH time slots, then can be with all the other FEF parts of empty data stuffing, and can to T2 modulator 1612-1 ..., 1612-n sends each NGH time slot.The FEF distributor can change grouping sending each NGH time slot to the T2 modulator, and in this case, can create T2 modulator interface (T2-MI) grouping.In this example, are IQ samples corresponding with each physical slot by time to the input of FEF distributor 1624, and the NGH logic channel configuration by 1622 definition of FEF buncher.The output of FEF distributor 1624 can be to comprise the IQ sample of input and added addressing to send the needed signaling of modulator of the physical slot by time of modulation, and the T2-MI grouping of not using the filler cells (having considered therein the base unit of the OFDM resource of frequency and time-domain) in the situation of FEF fully.Then the T2-MI grouping can be sent in the T2 distribution network 1614.In this example, NGH BB modulator 1634-1 ..., 1634-n generates BB NGH signal, and NGH modulator 1636-1 ..., 1636-n is created on the RF NGH signal that transmits in the NGH RF channel only.This allow to re-use be responsible for FEF IQ unit upconvert to corresponding frequencies T2 modulator 1612-1 ..., 1612-n a part.This can help to reduce the cost of NGH network, especially when transmission NGH signal in the FEF part.

Figure 17 and Figure 18 illustrate the example of repeater, auxiliary transmitter or receiver in the embodiments of the invention.What improve at needs mainly is (for example in indoor, tunnel, in the public transport etc.) in the situation that covers of NGH, amplifying the T2 signal may be the waste of power, because for traditional fixed reception device, generally can receive from the roof antenna with much better condition of acceptance the T2 signal.In an embodiment of the present invention, provide a kind of potentially more effective scheme, wherein the signal of relaying (repeat) is the NGH signal.If the work of repeater logic-based NGH channel, then this can realize.Because the NGH time slot of logic channel partly occurs more frequently than the FEF of single T2 signal, so repeater can be worked more constantly (interval between the pulse still less).Because 1≤N _LNC≤ N _RFSo, can reduce the tuner number (being tuner of each logic NGH channel) that each repeater needs.As shown in figure 17, extra module (logic NGH channel selector) can be responsible for retrieving with need to be by the relevant L1 signaling of each logic NGH channel of relaying.Then come between the FEF that forms logic NGH channel, to switch with the L1 signaling.Each logic NGH channel for relaying may need independently to amplify and transmit the RF chain.As shown in figure 18, in the situation of more senior repeater, can be to its decoding (so-called decoding-amplification-forwarding scheme) before transmitting the NGH signal to receiver.Yet, because decoded signal may be introduced larger delay, so can in different frequencies, transmit the NGH signal that recovers to avoid the interference to initial RF channel.For the same cause of setting forth about the time-interleaving of logic NGH channel before, each NGH channel should be transposed to different frequency.If only transmit therein the FEF of NGH signal a RF transmission, it can be enough then replacing the single RF channel selector of a plurality of RF channel selector.

Although not shown, if get rid of amplification and retransmission unit, RF combiner and antenna from the structure of the repeater shown in Figure 17 and 18 and auxiliary transmitter, then it is the structure be used to the receiver that is received in the signal that transmits under the structure of the present invention.In other words, receiver utilizes logic NGH channel selector to obtain information about the FEF that transmits therein the NGH signal, by be chosen in the RF channel of transmission FEF on it based on this information control RF channel selector, and utilize the NGH signal that the decoding unit decodes shown in the part is transmitted in Figure 18 in FEF, finally obtain the NGH signal.In addition, although not shown, if only transmit therein the FEF of NGH signal a RF transmission, it can be enough then replacing the single RF channel selector of a plurality of RF channel selector.

As described, the FEF boundling can be held together FEF in time and frequency domain, this can have advantages of comprise following.In the situation that single RF, the FEF boundling can help to reduce the L1 expense, because FEF length and NGH frame duration are independently, and can provide the gain of time diversity aspect.In the situation that a plurality of RF, the FEF boundling also can help to reduce the L1 expense, and this is because owing to can only transmit L1-config(SNC in PNC only on the first frame of superframe) so FEF length and NGH frame duration can be independently.The FEF boundling can reduce time of switching channels, and the FEF boundling can simplify the mapping of service, because seen single jumbo NGH channel, so that can multiplexing more services, increased statistical multiplexing gain.If the FEF boundling uses at a plurality of RF carrier waves, then frequency hopping can be brought extra frequency diversity, and gain is up to 4dB or more in indoor or Hypomobility scene.FEF boundling of the present invention can not forced any constraint (for example, minimum FEF length/NGH bandwidth) to the T2 signal, can not reduce the performance (for example time of switching channels) of T2 receiver yet.Because between T2 RF signal, do not need synchronously, so even when T2 RF by different broadcast operations and can when different websites transmit T2 RF, also can use the FEF boundling.

In an embodiment of the present invention, will a kind of different Signalling methods of some aspects of stating embodiment of controlling oneself be described.

The concept of logic NGH channel has typically defined the logic NGH channel (LNC) that comprises the logical frame that is mapped on the physical resource available in the DVB system multiplexing.Physical resource can refer to extra physical slot by time, and each is the time slot in the RF frequency and has it self bandwidth.So a RF frequency is in the configuration that will have it aspect time slot and the bandwidth segments.Different configurations can be applied to different RF frequencies at a RF frequency place.LNC can be mapped to physical resource, and its process is called as scheduling.This mapping generally is dynamically, although it can be static in some cases.For example, quiescent conditions can wherein apply the identical configuration of time slot and bandwidth corresponding to such situation to all RF frequencies, and the slot synchronization of RF frequency, i.e. in time alignment.

The dynamic mapping to extra physical slot by time (for example, physical resource) of this LNC can come signal indication by the information about LNC of physical slot by time in the L1 signaling, that can comprise First ray.The L1 signaling generally comprises two parts: L1-Pre(generally has regular length, that is, fixing field size) and L1-Post(generally have variable-length), and can in the signaling section of separating, transmit.In this case, it can be called as the signaling of out-of-band signalling or the outer type of band.In addition, only can transmit based on in-band signalling (that is, be included among the data PLP of present frame signaling information) about the multidate information of the signaling of the PLP of the expectation in the next frame.Generally, send the signaling that signaling data is called as type in in-band signalling or the band with data.

For given superframe, the L1-Pre part is fixed in length and value.In an embodiment of the present invention, logical frame dynamically can be mapped to time slot and can keep the regular length of L1-pre, but values of some mapping relevant fields may change.In an embodiment of the present invention, receiver does not think that L1-pre only is the repetition from a frame of superframe to another frame, determines that some fields may change.As for the decoding for the L1-pre of firm maintenance, in an embodiment of the present invention, can soft decoding input be set to indicate for the sequence of physical layer time slot and/or the value of superframe known fixed part.For example, in case of necessity, standing part can have log-likelihood ratio (LLR) value, and it is set to infinite to guarantee the better decoding performance of variable part.

In an embodiment of the present invention, another kind of signal indication method is may be the beginning of the logical frame of logic NGH frame (LNF) with signal indication.As previously mentioned, can have variable value for some field L1-pre, and in an embodiment of the present invention, can be in L1-pre, rather than as the part done in other embodiments of the invention in L1-dynamic, finish the relevant signaling of mapping at L1-pre and part.May be that (that is, the signaling of transmitting in the data flow of physical layer pipe (PLP) rather than independent signaling section is called as in-band signalling to data segment, and can use in-band signalling by copying the L1-pre signaling.In addition, can be unrestricted for the signaling of the PLP that transports in-band signalling.

For example, comprise in an embodiment of the present invention about the signaling such as the information of the physical slot by time of the First ray of logic channel and can comprise following signaling, it generally transports in such as the first of the preamble of each extra physical slot by time of L1-Pre and the L1-Post part such as L1-dynamic.The signaling element L1_OFFSET_TIME that in the L1-Pre signaling, has the number that is used for the unit between signal indication L1-pre (a) and the L1-post (b).If do not have the L1-post signaling in the NGH time slot that L1-pre (a) exists, then L1-post (b) can be related with next logical frame.In this signaling element, for example, 0xFFFF can mean that L1-post is not present in the current time slots.The L1-Pre signaling can have the current LNC of indication as the L1_OFFSET_FREQ of the frequency of next possible time slot.In other words, the RF frequency of next time slot of the frame of the LNC that transmits is transported in this indication in current time slots.The L1-dynamic signaling has the LNC_WINDOW that indication is mapped to the number of time slot of LNC before by signal indication.Generally, this is all LNC for system.The L1-dynamic signaling can also have indicates again signal indication to be used for the signaling element T _ DELTA of the time slot all LNC, that be assigned to one/previous time slot of system.In-band signalling can comprise signaling element PLP_LNC_WINDOW, is used for that signal indication is mapped to LNC and by the number of time slot of signal indication.In-band signalling can comprise the signaling element PLP_T_DELTA of the time slot of indicating the upper one/previous time slot that is assigned to signal indication.These in-band signalling elements are generally about the LNC relevant with given PLP.

Coming with another approach in the embodiments of the invention of signal indication, L1-Pre part can have the information element that is similar to as in conjunction with the described L1_OFFSET_TIME of embodiment of front, and this can be by RNTO L1-OFFSET_NOF_CELLS, the number of unit between its signal indication L1-pre and the L1-post.Again, 0xFFFF can refer to that L1-post is not present in the current time slot.L1-Pre part also can have the information element that is similar to L1_OFFSET_FREQ, and it can be by RNTO LNC_OFFSET_FREQ, its with signal indication will transport the frequency of next time slot of current LNC.In addition, the L1-Pre part information element LNC_OFFSET_DELTA that can have the indication current time slots and transport the interval between next time slot of frame of current LNC.In an embodiment of the present invention, LNC_WINDOW and T_DELTA signal are not as being included among the L1-dyn in conjunction with previous embodiment is described.This is because generally do not need them.In the L1-Pre of physical slot by time part, the signaling element, for example the signaling field gives receiver to transporting identical time current and next next time slot of the beginning of LNC and the approach of frequency coordinate.So the dynamic mapping of current LNC is signaled in the unoccupied place in the time of will pursuing in L1-Pre, and does not generally need specific signaling in L1-dynamic.In-band signalling can comprise for signaling and will transport the information element PLP_LNC_OFFSET_FREQ of frequency of next time slot of the current PLP of current LNC, and signals the information element PLP_LNC_OFFSET_DELTA as the relative time of T in the period of next time slot of the current PLP that will transport current LNC.The signaling information element of in-band signalling field generally can be identical with the equivalent elements among the L1-pre, and general only relevant with each PLP among the current LNC.Generally, in the in-band signalling pattern, receiver does not receive the signaling in the L1-pre part constantly.

Above embodiment to be interpreted as illustrated examples of the present invention.Be appreciated that about any feature of any one embodiment description and can use separately, perhaps merge with described other features and use, also can merge with one or more features of any other embodiment and use, perhaps merge arbitrarily use with any other embodiment.In addition, in the situation that does not break away from the scope of the present invention that in claims, defines, there are not equivalent and the modification described above can also adopting.

Claims

1. method that is used for sending at wireless system the data that comprise a plurality of data flow comprises:

Receive one or more data flow;

The data flow that receives is mapped to extra physical slot by time;

Configuration comprises one or more frames of described extra physical slot by time; And

Send described one or more frame at one or more radio frequencies.

2. the method for claim 1, wherein described data flow is broadcast data stream for handheld terminal.

3. the method for claim 1, wherein mapping comprises:

The data flow that receives is mapped to one or more logical frame; And

Each of described one or more logical frame is mapped to extra physical slot by time more than one.

4. the method for claim 1, wherein configuration comprises:

Configuration comprises the frame of signaling information that is mapped to the data flow of described extra physical slot by time for reception.

5. method as claimed in claim 4, wherein, described signaling information comprises P1 information, L1-pre information and L1-post information, and described L1-post information comprises L1-config information and L1-dynamic information.

6. method as claimed in claim 5 wherein, is distributed described P1 information and described L1-pre information in each extra physical slot by time.

7. method as claimed in claim 5, wherein, when at a described one or more frame of radio frequency transmission, with beginning place in each logical frame of described L1-config information and described L1-dynamic information placement.

8. method as claimed in claim 5, wherein, when transmitting from the continuous logic frame of logic channel, one or more frame more than a radio frequency, and when existing more than a logic channel, a logic channel is set to main logic channel, all the other logic channels are set to less important logic channel, described L1-config information and described L1-dynamic information are arranged in beginning place in each logical frame of described main logic channel, and arrange described L1-dynamic information in beginning place of each logical frame of described less important logic channel.

9. method as claimed in claim 8, wherein, described logic channel comprises one or more superframes, described superframe comprises a plurality of frames, and arranges extraly described L1-config information in beginning place of each superframe of described less important logic channel.

10. method as claimed in claim 5, wherein, described L1-pre information comprise following any one: the L1_OFFSET_FREQ of radio frequency (RF) frequency of next time slot of the NGH_SLOT_INTERVAL at the interval between the L1_OFFSET_TIME of the number of the unit between indication L1-pre and the L1-post, hand-held (NGH) time slot of two continuous next generations of indication, the logic NGH channel (LNC) that transmits is transported in indication in current time slots frame and indicate current time slots and transport the LNC_OFFSET_DELTA in the gap between next time slot of frame of current LNC.

11. a device that is used for sending at wireless system the data that comprise a plurality of data flow comprises:

The first gateway is used for data flow is mapped to one or more logic channels that each includes one or more logical frame;

One or more the first modulators are used for the data that generation will be included in each physical slot by time of logic-based channel;

The physical slot by time agency is used for distributing the data that will be included in each physical slot by time to one or more the second modulators; And

Described one or more the second modulator is used for modulation and sends the frame that comprises the physical slot by time data of distributing.

12. device as claimed in claim 11, wherein, described data flow is the broadcast data stream for handheld terminal.

13. device as claimed in claim 11 wherein, comprises that the frame of the physical slot by time data of distributing comprises the signaling information that is mapped to the data flow of extra physical slot by time for reception.

14. device as claimed in claim 13, wherein, described signaling information comprises P1 information, L1-pre information and L1-post information, and described L1-post information comprises L1-config information and L1-dynamic information.

15. device as claimed in claim 14 wherein, distributes described P1 information and described L1-pre information in each extra physical slot by time.

16. device as claimed in claim 14 wherein, when at a described one or more frame of radio frequency transmission, is arranged described L1-config information and described L1-dynamic information in beginning place of each logical frame.

17. device as claimed in claim 14, wherein, when transmitting from the continuous logic frame of logic channel, one or more frame more than a radio frequency, and when existing more than a logic channel, a logic channel is set to main logic channel, all the other logic channels are set to less important logic channel, described L1-config information and described L1-dynamic information are arranged in beginning place in each logical frame of described main logic channel, and arrange described L1-dynamic information in beginning place of each logical frame of described less important logic channel.

18. device as claimed in claim 14, wherein, described L1-pre information comprise following any one: the L1_OFFSET_FREQ of radio frequency (RF) frequency of next time slot of the NGH_SLOT_INTERVAL at the interval between the L1_OFFSET_TIME of the number of the unit between indication L1-pre and the L1-post, hand-held (NGH) time slot of two continuous next generations of indication, the logic NGH channel (LNC) that transmits is transported in indication in current time slots frame and indicate current time slots and transport the LNC_OFFSET_DELTA in the gap between next time slot of frame of current LNC.

19. a method that is used for receiving at wireless system the data that comprise a plurality of data flow comprises:

Receive one or more frames at one or more radio frequencies;

Obtain the position of the extra physical slot by time of each frame; And

The data flow of described extra physical slot by time is distributed in reception.

20. method as claimed in claim 19, wherein, described data flow is the broadcast data stream for handheld terminal.

21. method as claimed in claim 19, wherein, receiving data stream comprises:

Use is distributed to more than the one or more logical frame in the middle of a plurality of logical frame of data formation of one extra physical slot by time; And

From described one or more logical frame, extract data flow.

22. method as claimed in claim 19 further comprises: the signaling information that to be used for receive the data flow that is mapped to described extra physical slot by time.

23. method as claimed in claim 22, wherein, described signaling information comprises P1 information, L1-pre information and L1-post information, and described L1-post information comprises L1-config information and L1-dynamic information.

24. method as claimed in claim 23 wherein, is distributed described P1 information and described L1-pre information in each extra physical slot by time.

25. method as claimed in claim 23, wherein, when at the one or more frame of radio frequency transmission, with beginning place in each logical frame of described L1-config information and described L1-dynamic information placement.

26. method as claimed in claim 23, wherein, when transmitting from the continuous logic frame of logic channel, one or more frame more than a radio frequency, and when existing more than a logic channel, a logic channel is set to main logic channel, all the other logic channels are set to less important logic channel, described L1-config information and described L1-dynamic information are arranged in beginning place in each logical frame of described main logic channel, and arrange described L1-dynamic information in beginning place of each logical frame of described less important logic channel.

27. method as claimed in claim 26, wherein, described logic channel comprises one or more superframes, and described superframe comprises a plurality of frames, and arranges extraly described L1-config information in beginning place of each superframe of described less important logic channel.

28. method as claimed in claim 26, wherein, described L1-pre information comprise following any one: the L1_OFFSET_FREQ of radio frequency (RF) frequency of next time slot of the NGH_SLOT_INTERVAL at the interval between the L1_OFFSET_TIME of the number of the unit between indication L1-pre and the L1-post, hand-held (NGH) time slot of two continuous next generations of indication, the logic NGH channel (LNC) that transmits is transported in indication in current time slots frame and indicate current time slots and transport the LNC_OFFSET_DELTA in the gap between next time slot of frame of current LNC.

29. a device that is used for receiving at wireless system broadcast frame comprises:

The logic channel selector is used for extracting the signaling information relevant with logic channel; And

One or more radio frequencies (RF) selector is used for the physical slot by time that receives the RF signal and select to select by the logic channel selector.

30. device as claimed in claim 29 further comprises: the one or more decoding units that are used for the data that decoding transmits in physical slot by time.

31. device as claimed in claim 29, wherein, described signaling information comprises P1 information, L1-pre information and L1-post information, and described L1-post information comprises L1-config information and L1-dynamic information.

32. device as claimed in claim 31 wherein, distributes described P1 information and described L1-pre information in each extra physical slot by time.

33. device as claimed in claim 31 wherein, when at a described one or more frame of radio frequency transmission, is arranged described L1-config information and described L1-dynamic information in beginning place of each logical frame.

34. device as claimed in claim 31, wherein, when transmitting from the continuous logic frame of logic channel, one or more frame more than a radio frequency, and when existing more than a logic channel, a logic channel is set to main logic channel, all the other logic channels are set to less important logic channel, described L1-config information and described L1-dynamic information are arranged in beginning place in each logical frame of described main logic channel, and arrange described L1-dynamic information in beginning place of each logical frame of described less important logic channel.

35. device as claimed in claim 31, wherein, described L1-pre information comprise following any one: the L1_OFFSET_FREQ of radio frequency (RF) frequency of next time slot of the NGH_SLOT_INTERVAL at the interval between the L1_OFFSET_TIME of the number of the unit between indication L1-pre and the L1-post, hand-held (NGH) time slot of two continuous next generations of indication, the logic NGH channel (LNC) that transmits is transported in indication in current time slots frame and indicate current time slots and transport the LNC_OFFSET_DELTA in the gap between next time slot of frame of current LNC.